Powers/Abilities: Kronus is a brilliant scientist (in
Earth-616 timeline and Earth-20476 timeline, too). His strength was high, he could
age, or transport back in time, things, persons and whole lands (in
Banner's dreams in the Earth-20476 timeline).

History:
(Incredible Hulk#204 (fb) - BTS) - Prof. Kerwin Kronus was a brilliant scientist. He
created a Time Machine capable to send a man in the past and back in the
present.

(Incredible Hulk#204) - Kronus and General Thunderbolt Ross
offered to Bruce Banner the possibility to go back in the past and correct the
events so Hulk would never have existed. Bruce Banner accepted.Kronus
warned Bruce Banner that if something went wrong they could repeat the experiment, but the human body could not resist to the stress of two trips in the time. Banner was sent in the past,
but unknowingly created a divergent timeline in which he had not become the
Hulk, but that Rick Jones had died. A subsequent trip allowed Banner to return
to the Earth-616 timeline. When he
returned, Kronus welcomed him; the Machine functioned perfectly but Banner
hadn't changed the past.

Comments: Created by
Len Wein, Herb Trimpe and Joe Staton.

My idea is that when Banner saved himself from
the Gamma Bomb he created and alternate timeline and when went "back to the
future" he didn't returned to the original timeline but in the "Rick Jones died-Timeline" . When he went back in the past for the second time
(despite Kronus statements about the enormous stress) he restored the past and
returned to the original timeline of Earth-616 (or created another alternate
timeline mostly equal to the Earth-616 one). That's about how I'd look at it. The Earth-20476
timeline was a divergence created, and it presumably still exists.

(Incredible Hulk#204 (fb) - BTS) - Kerwin Kronus was a
brilliant scientist. He created a Time Machine capable to send a man in the past and back
in the present. Banner accepted to be thrown in the past by Kronus' Time
Machine to prevent himself from becoming the Hulk.

(Incredible Hulk#204) - The experiment was a success, Kronus
welcomed Banner but Banner was distressed, because during the first
Gamma Bomb experiment, he had taken shelter and was not exposed to the
radiation, but Rick Jones had been killed.

Banner dreamt of Kronus who had become the Lord of Time, and wanted
to punish him because Banner ruined the the time-experiment. In the dream, the
time-power of Kronus transformed Banner in the Hulk, and the two clashed. Kronus
brought Hulk 1,000,000 years in the past and entrapped him behind a time
barrier. Kronus removed the barrier and Hulk hit the "Clock-Man". Banner
awoke. He left her wife Betty and still distressed, ran to the Kronus' Time
Machine and went back in time again.